DOI: 10.1615/ICHMT.2004.IntThermSciSemin
ISBN Print: 978-9-61913-930-1
Pressure Rise At Shock Boiling Of Liquid At The Wall
RÉSUMÉ
The paper presents physical and mathematical description of non-equilibrium phase transition and dynamics of pressure in the underheated liquid at an intensively heated tubular heating element located in the liquid. The calculation technique of a two-stage process has been developed. The technique enables one to determine the expectation time period from the point of a surge of heat emission power to the beginning of shock boiling on the wall and to calculate the dynamics of a pressure rise. The results of the calculation have been compared to the data of physical experiments on the heaters 10 mm in diameter at a temperature change rate of 800 - 3700 K/s. The experiments have been performed at a pressure of 0.11 - 4.0 MPa and an underheating value of 10 - 40 K.